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One acre equals 1 ⁄ 640 (0.0015625) square mile, 4,840 square yards, 43,560 square feet, [2] or about 4,047 square metres (0.4047 hectares) (see below).While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends upon the particular yard on which it is based.
A description from 1675 states, "Dimensurator or Measuring Instrument whereof the mosts usual has been the Chain, and the common length for English Measures four Poles, as answering indifferently to the Englishs Mile and Acre, 10 such Chains in length making a Furlong, and 10 single square Chains an Acre, so that a square Mile contains 640 ...
In U.S. land surveying under the Public Land Survey System (PLSS), a section is an area nominally one square mile (2.6 square kilometers), containing 640 acres (260 hectares), with 36 sections making up one survey township on a rectangular grid.
A fast-spreading wildfire that erupted this week about 45 miles northwest of Los Angeles roared from nothing to nearly 10,000 acres − in a matter of hours. The Hughes Fire that started Wednesday ...
640 acres SI units 2.59 × 10 6 m 2; 2.59 km 2; The square mile (abbreviated as sq mi and sometimes as mi 2) [1] is an imperial and US unit of measure for area.
Township lines run parallel to the baseline (east-west), while range lines run north–south; each are established at 6-mile intervals. Lastly, townships are subdivided into 36 sections of approximately 1 square mile (640 acres; 2.6 km 2) and sections into four quarter-sections of 0.25 square miles (160 acres; 0.65 km 2) each.
The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters.
0.3861 square miles [2] 247.1 acres [3] Conversely: 1 m 2 = 0.000001 (10 −6) km 2; 1 hectare = 0.01 (10 −2) km 2; 1 square mile = 2.5899 km 2 [4] 1 acre = about 0.004 047 km 2 [5] The symbol "km 2" means (km) 2, square kilometre or kilometre squared and not k(m 2), kilo–square metre. For example, 3 km 2 is equal to 3 × (1,000 m) 2 ...